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Finding the Fourth Proportional to 865,818.80, 1,296,103.80 and 654,117.20

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Solution

The fourth proportional to 865,818.80, 1,296,103.80 and 654,117.20 is: 979,193.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    865,818.80 : 1,296,103.80 = 654,117.20 : x
  2. Step 2: Convert to fraction form
    865,818.80/1,296,103.80 = 654,117.20/x
  3. Step 3: Cross multiply
    865,818.80x = 1,296,103.80 × 654,117.20
  4. Step 4: Simplify right side
    865,818.80x = 847,803,788,565.36
  5. Step 5: Solve for x
    x = 847,803,788,565.36/865,818.80
  6. Step 6: Final answer
    x = 979,193.09

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.